CVE-2025-5520

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Source
https://cve.org/CVERecord?id=CVE-2025-5520
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-5520.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-5520
Published
2025-06-03T18:00:22.302Z
Modified
2026-07-22T00:05:46.933735Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Open5GS AMF/MME emm_state_authentication assertion
Details

A vulnerability was found in Open5GS up to 2.7.3. It has been classified as problematic. Affected is the function gmmstateauthentication/emmstateauthentication of the component AMF/MME. The manipulation leads to reachable assertion. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 9f5d133657850e6167231527514ee1364d37a884. It is recommended to apply a patch to fix this issue. This is a different issue than CVE-2025-1893.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/5xxx/CVE-2025-5520.json",
    "cwe_ids": [
        "CWE-617"
    ],
    "cna_assigner": "VulDB",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "2.7.3"
                },
                {
                    "last_affected": "2.7.3"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/open5gs/open5gs

Affected ranges

Type
GIT
Repo
https://github.com/open5gs/open5gs
Events
Introduced
83e35bb2de7e67646fdba849580184422b10006a
Fixed
9f5d133657850e6167231527514ee1364d37a884
Database specific 
{
    "extracted_events": [
        {
            "introduced": "2.7.0"
        },
        {
            "last_affected": "2.7.0"
        },
        {
            "introduced": "2.7.1"
        },
        {
            "last_affected": "2.7.1"
        },
        {
            "introduced": "2.7.2"
        },
        {
            "last_affected": "2.7.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

2.*
2.7.0
2.7.1
2.7.2
v2.*
v2.7.0
v2.7.1
v2.7.2
v2.7.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-5520.json"
vanir_signatures_modified 
"2026-07-22T00:05:46Z"
vanir_signatures 
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